DE102006046182B4 - Semiconductor element with a support structure and manufacturing method - Google Patents
Semiconductor element with a support structure and manufacturing method Download PDFInfo
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- DE102006046182B4 DE102006046182B4 DE102006046182A DE102006046182A DE102006046182B4 DE 102006046182 B4 DE102006046182 B4 DE 102006046182B4 DE 102006046182 A DE102006046182 A DE 102006046182A DE 102006046182 A DE102006046182 A DE 102006046182A DE 102006046182 B4 DE102006046182 B4 DE 102006046182B4
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Abstract
Halbleiterbauelement mit einer Stützstruktur, die in einer ersten Schichtenfolge angeordnet ist, wobei die Schichtenfolge mehrere Schichten eines Dielektrikums umfasst,
einer zweiten Schicht, die oberhalb der ersten Schichtenfolge angeordnet ist,
einem Bondpad, der oberhalb der zweiten Schicht angeordnet ist,
wobei die Stützstruktur unter einem Teilbereich oder unter Teilbereichen des Bondpads ausgebildet ist und der Teilbereich oder die Teilbereiche im wesentlichen dem Bereich der maximalen mechanischen Belastung während des Bondprozesses entsprechen.Semiconductor device having a support structure, which is arranged in a first layer sequence, wherein the layer sequence comprises a plurality of layers of a dielectric,
a second layer, which is arranged above the first layer sequence,
a bondpad disposed above the second layer,
wherein the support structure is formed under a partial region or under partial regions of the bond pad and the partial region or the partial regions substantially correspond to the region of maximum mechanical stress during the bonding process.
Description
Die vorliegende Erfindung bezieht sich auf ein Halbleiterelement mit einer Stützstruktur und auf ein Verfahren zur Herstellung einer Stützstruktur.The The present invention relates to a semiconductor element a support structure and to a method of making a support structure.
Halbleiterelemente werden in integrierten Schaltungen für eine Vielzahl von elektronischen Anwendungen und Einrichtungen verwendet, wie z. B. Fernsehen, Radio oder Telefon. Dabei geht der Trend in der Elektronikindustrie hin zur Miniaturisierung der elektronischen Komponenten.Semiconductor components are used in integrated circuits for a variety of electronic Applications and facilities used, such. TV, radio or telephone. The trend is in the electronics industry for miniaturization of electronic components.
Integrierte Schaltungen umfassen u. a. eine Vielzahl von Metallisierungsebenen und dielektrischen Schichten, in denen die Leitbahnen ausgebildet sind. In der Vergangenheit wurden die dielektrischen Schichten vorzugsweise aus Siliziumdioxid gebildet. Mit zunehmender Miniaturisierung werden heutzutage verstärkt sogenannte low-k Dielektrika verwendet. Hierunter versteht man Dielektrika mit einem Dielektrizitätskoeffizienten kleiner als der von Siliziumdioxid. Low-k Materialien ermöglichen geringe RC Zeiten in den Leitbahnabschnitten. Gleichzeitig haben low-k Materialien nur eine geringe mechanische Stabilität und ein geringes Elastizitätsmodul.integrated Circuits include u. a. a variety of metallization levels and dielectric layers in which the conductive lines are formed are. In the past, the dielectric layers have been preferred made of silicon dioxide. With increasing miniaturization nowadays reinforced so-called low-k dielectrics used. These are dielectrics with a dielectric coefficient smaller than that of silicon dioxide. Allow low-k materials low RC times in the interconnect sections. At the same time low-k materials only a low mechanical stability and a low modulus of elasticity.
Zum
elektrischen Anschluss des integrierten Schaltkreises mit dem umgebenden
Gehäuse
sind auf dem Chip Kontaktflächen,
sogenannte Bondpads vorgesehen. Auf diesen wird in einem Bondprozess ein
Draht festgebondet. Der Bondprozeß ist eine Verbindungstechnik
bei dem der Draht unter Druck, Hitze und Ultraschall dauerhaft mit
dem Bondpad verbunden wird. Typische Bondverfahren sind beispielsweise
das Thermokompressionsbonden das Thermosonic-Ball-Wedge-Bonden und
das Ultraschall-Wedge-Wedge-Bonden. Das Bonden von Bondpads mit
darunterliegenden low-k Materialien ist schwierig. Während des
Bondprozesses wird das darunter liegende Material einer mechanischen
Belastung ausgesetzt, die in ihrer Größe von den Parametern des Bondprozesses
abhängt.
Low-k Dielektrika sind aufgrund ihrer Materialeigenschaften grundsätzlich wenig
dazu geeignet, diesen mechanischen Belastungen standzuhalten; daraus
können
Beschädigungen
im Halbleiterelement bis hin zum Ausfall des integrierten Schaltkreises
resultieren. Deshalb werden unter den Bondpads häufig Stützstrukturen ausgebildet, die
eine Beschädigung
während
des Bondprozesses verhindern sollen. Aus der
Aus
Der Erfindung liegt die Aufgabe zugrunde, ein Halbleiterelement mit einer Stützstruktur zu schaffen, welches verbesserte Eigenschaften aufweist.Of the Invention is based on the object, a semiconductor element with a support structure to provide, which has improved properties.
Erfindungsgemäß wird diese Aufgabe durch ein Halbleiterelement mit einer Stützstruktur gelöst, die in einer ersten Schichtenfolge des Halbleiterelements angeordnet ist, wobei die Schichtenfolge mehrere Schichten eines Dielektrikums umfasst; mit einer zweiten Schicht, die oberhalb der ersten Schichtenfolge angeordnet ist; einem Bondpad, der oberhalb der zweiten Schicht angeordnet ist, wobei die Stützstruktur unter einem Teilbereich oder unter Teilbereichen des Bondpads ausgebildet ist und der Teilbereich oder die Teilbereiche im wesentlichen dem Bereich der maximalen mechanischen Belastung während des Bondprozesses entsprechen.According to the invention this Problem solved by a semiconductor element having a support structure, the arranged in a first layer sequence of the semiconductor element is, wherein the layer sequence multiple layers of a dielectric includes; with a second layer above the first layer sequence is arranged; a bonding pad, which is disposed above the second layer is, the support structure formed under a portion or under portions of the bondpad is and the subarea or subsections essentially the Range of maximum mechanical stress during the bonding process.
Die
Erfindung umfasst darüber
hinaus ein Verfahren zur Herstellung eines Halbleiterbauelements
mit den Schritten:
Ausbilden eines ersten Schichtstapels auf
einem Halbleitersubstrat, wobei der Schichtstapel mehrere Schichten
eines Dielektrikums umfasst,
Ausbilden einer zweiten Schicht
oberhalb des ersten Schichtstapels,
Ausbilden eines Bondpads
oberhalb der zweiten Schicht,
Ausbilden einer Stützstruktur
unter einem Teilbereich oder Teilbereichen des Bondpads, wobei die
Stützstruktur
innerhalb des ersten Schichtstapels ausgebildet wird und der Teilbereich
oder die Teilbereiche im wesentlichen dem Bereich der maximalen
mechanischen Beanspruchung während
des Bondprozesses entsprechen.The invention furthermore includes a method for producing a semiconductor component with the steps:
Forming a first layer stack on a semiconductor substrate, wherein the layer stack comprises a plurality of layers of a dielectric,
Forming a second layer above the first layer stack,
Forming a bond pad above the second layer,
Forming a support structure under a partial region or partial regions of the bond pad, wherein the support structure is formed within the first layer stack and the partial region or the partial regions correspond substantially to the region of maximum mechanical stress during the bonding process.
Die Stützstruktur ist/wird nur unter einem Teilbereich oder Teilbereichen des Bondpads und nicht unter dem gesamten Bondpad ausgebildet.The support structure is / is only under a partial area or partial areas of the bondpad and not formed under the entire bondpad.
Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.advantageous Embodiments of the invention will become apparent from the dependent claims.
Vorzugsweise wird die Stützstruktur so ausgebildet, dass sie mehrere Leitbahnabschnitte umfasst.Preferably becomes the support structure is formed so that it comprises several track sections.
Bevorzugt ist die Stützstruktur derart ausgebildet, dass unterhalb des Bondpads ein innerer oder äußerer Bereich ohne Stützfunktion verbleibt.Prefers is the support structure formed such that below the bondpad an inner or outer region without support function remains.
Vorzugsweise umfasst die Stützunterstruktur mehrere Stützunterstrukturen.Preferably, the support substructure comprises several support substructures.
Vorzugsweise sind die Stützunterstrukturen kreisförmig unter dem Bondpad angeordnet.Preferably the support substructures are circular below arranged the bonding pad.
Gemäß einer Ausgestaltung der Erfindung ist zwischen zwei benachbarten Stützunterstrukturen eine Leitbahn angeordnet, die insbesondere eine funktionale Leitbahn ist.According to one Embodiment of the invention is between two adjacent support substructures one Leitbahn arranged, in particular, a functional interconnect is.
Vorzugsweise sind die Stützunterstrukturen in Form von Leitbahnabschnitten realisiert, die in benachbarten dielektrischen Schichten der ersten Schichtenfolge angeordnet sind und durch Stützvias miteinander verbunden sind.Preferably are the support substructures in Realized form of conductor track sections, which in adjacent dielectric Layers of the first layer sequence are arranged and by supporting vias with each other are connected.
Vorzugsweise weisen die Leitbahnabschnitte der Stützunterstrukturen eine Länge und eine Breite auf, wobei die Länge größer als die Breite ist und die Längsausrichtung eines ersten Leitbahnabschnitts parallel zu der Längsausrichtung eines zweiten, in einer benachbarten dielektrischen Schicht ausgebildeten Leitbahnabschnitts ist.Preferably the track sections of the support substructures have a length and a width on, with the length greater than the width is and the longitudinal orientation a first track section parallel to the longitudinal orientation a second, formed in an adjacent dielectric layer Leitbahnabschnitts is.
Weiterhin kann die Längsausrichtung eines ersten Leitbahnabschnitts orthogonal zu der Längsausrichtung eines zweiten, in einer benachbarten dielektrischen Schicht ausgebildeten Leitbahnabschnitts sein.Farther can the longitudinal alignment a first track portion orthogonal to the longitudinal orientation a second, formed in an adjacent dielectric layer Be track section.
Vorzugsweise können ein oder mehrere Leitbahnabschnitte einer Stützunterstruktur als funktionale Leitbahn ausgebildet sein. Die Längsausrichtung der Leitbahnabschnitte benachbarter Stützunterstrukturen kann sowohl parallel als auch orthogonal zueinander ausgerichtet sein.Preferably can one or more track sections of a support substructure as functional Be conductor formed. The longitudinal alignment the Leitbahnabschnitte adjacent support substructures can both be aligned parallel to each other and orthogonal to each other.
Die Erfindung wird nachstehend anhand von bevorzugten Ausführungsbeispielen unter Bezugnahme auf die Zeichnungen näher beschrieben.The Invention will be described below with reference to preferred embodiments described in more detail with reference to the drawings.
Es zeigen:It demonstrate:
Der
Bond weist annähernd
die Form einer Kugel auf und wird mechanisch auf den Bondpad angedrückt. Dabei
sinkt die Höhe
des Bonds und der Durchmesser steigt.
Die
Stützstruktur
Mögliche Ausführungsformen der Stützunterstruktur werden nachfolgend erläutert.Possible embodiments the support substructure are explained below.
Die Stützstruktur kann Stützunterstrukturen gleicher Art, insbesondere gleicher Form und Größe umfassen. Ebenso kann die Stützstruktur aber auch Stützunterstrukturen verschiedener Art umfassen.The support structure can support substructures same Type, in particular the same shape and size include. Likewise, the support structure but also supporting substructures include various types.
Vorzugsweise wird eine, insbesondere funktionale, Leitbahn zwischen zwei benachbarten Stützunterstrukturen angeordnet. Unter funktionaler Leitbahn sind solche Metallisierungstrukturen zu verstehen, die Halbleiterelemente, wie z. B. Transistoren oder Dioden elektrisch kontaktieren. Der innere Bereich ohne Stützstruktur kann durch die funktionale Leitbahn mit dem äußeren Bereich verbunden werden. Eine oder mehrere Stützunterstrukturen können als funktionale Leitbahn dienen.Preferably becomes a, in particular functional, track between two adjacent Supporting substructures arranged. Under functional track are such Metallisierungstrukturen to understand the semiconductor elements, such. B. transistors or Contact diodes electrically. The inner area without supporting structure can be connected by the functional interconnect to the outer region. One or more support substructures can as serve functional route.
Innerhalb
der ersten Schichtenfolge ist eine Stützstruktur
Der
prinzipielle vertikale Aufbau der Stützunterstruktur wird beispielhaft
anhand der Stützunterstruktur
Vorzugsweise
sind in den Schichten der ersten Schichtfolge
Vorzugsweise
wird die Stützunterstruktur
Die Stützunterstrukturen werden vorzugsweise durch ein Damascene Verfahren hergestellt. Hierbei kann es sich sowohl um ein Single-Damascene als auch um ein Dual-Damascene Verfahren handeln. Beide Verfahren sind dem Fachmann bekannt, so dass auf eine ausführliche Darstellung an dieser Stelle verzichtet wird.The Supporting substructures are preferably prepared by a damascene process. in this connection It can be both a single damascene and a dual damascene Act procedure. Both methods are known in the art, so that on a detailed Representation is omitted at this point.
Oberhalb
der ersten Schichtenfolge
Vorzugsweise
ist die zweite Schicht
Über der
zweiten Schicht ist ein Bondpad
Gemäß einem
weiteren Ausführungsbeispiel kann
eine Stützunterstruktur
(
Claims (14)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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DE102006046182A DE102006046182B4 (en) | 2006-09-29 | 2006-09-29 | Semiconductor element with a support structure and manufacturing method |
US11/862,211 US8592987B2 (en) | 2006-09-29 | 2007-09-27 | Semiconductor element comprising a supporting structure and production method |
US14/088,455 US20140145349A1 (en) | 2006-09-29 | 2013-11-25 | Semiconductor element comprising a supporting structure and production method |
Applications Claiming Priority (1)
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DE102006046182A DE102006046182B4 (en) | 2006-09-29 | 2006-09-29 | Semiconductor element with a support structure and manufacturing method |
Publications (2)
Publication Number | Publication Date |
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DE102006046182A1 DE102006046182A1 (en) | 2008-04-03 |
DE102006046182B4 true DE102006046182B4 (en) | 2010-11-11 |
Family
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Family Applications (1)
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DE102006046182A Expired - Fee Related DE102006046182B4 (en) | 2006-09-29 | 2006-09-29 | Semiconductor element with a support structure and manufacturing method |
Country Status (2)
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US (2) | US8592987B2 (en) |
DE (1) | DE102006046182B4 (en) |
Families Citing this family (11)
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US7948064B2 (en) | 2008-09-30 | 2011-05-24 | Infineon Technologies Ag | System on a chip with on-chip RF shield |
US8889548B2 (en) | 2008-09-30 | 2014-11-18 | Infineon Technologies Ag | On-chip RF shields with backside redistribution lines |
US8178953B2 (en) | 2008-09-30 | 2012-05-15 | Infineon Technologies Ag | On-chip RF shields with front side redistribution lines |
US8169059B2 (en) * | 2008-09-30 | 2012-05-01 | Infineon Technologies Ag | On-chip RF shields with through substrate conductors |
US8063469B2 (en) * | 2008-09-30 | 2011-11-22 | Infineon Technologies Ag | On-chip radio frequency shield with interconnect metallization |
US8227889B2 (en) * | 2008-12-08 | 2012-07-24 | United Microelectronics Corp. | Semiconductor device |
DE102009009442A1 (en) * | 2009-02-18 | 2010-09-09 | Polylc Gmbh & Co. Kg | Organic electronic circuit |
JP6008603B2 (en) * | 2012-06-15 | 2016-10-19 | エスアイアイ・セミコンダクタ株式会社 | Semiconductor device |
US9620460B2 (en) | 2014-07-02 | 2017-04-11 | Samsung Electronics Co., Ltd. | Semiconductor chip, semiconductor package and fabricating method thereof |
US10410934B2 (en) * | 2017-12-07 | 2019-09-10 | Micron Technology, Inc. | Apparatuses having an interconnect extending from an upper conductive structure, through a hole in another conductive structure, and to an underlying structure |
WO2022240894A1 (en) * | 2021-05-11 | 2022-11-17 | Celestial Oncology Inc. | Coupled robotic radiation therapy system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US20020043727A1 (en) * | 2000-10-13 | 2002-04-18 | Hsiao-Che Wu | Bonding pad structure |
DE10342996A1 (en) * | 2003-09-17 | 2005-04-21 | Infineon Technologies Ag | Semiconductor arrangement comprises a substrate with integrated electronic switching elements, layer stacks arranged over the substrate, and a dummy structure arranged in two layer stacks for mechanically stabilizing the stacks |
US6908841B2 (en) * | 2002-09-20 | 2005-06-21 | Infineon Technologies Ag | Support structures for wirebond regions of contact pads over low modulus materials |
Family Cites Families (10)
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US6143396A (en) * | 1997-05-01 | 2000-11-07 | Texas Instruments Incorporated | System and method for reinforcing a bond pad |
US6444641B1 (en) * | 1997-10-24 | 2002-09-03 | Eli Lilly Company | Fatty acid-acylated insulin analogs |
TW430935B (en) * | 1999-03-19 | 2001-04-21 | Ind Tech Res Inst | Frame type bonding pad structure having a low parasitic capacitance |
US6291331B1 (en) * | 1999-10-04 | 2001-09-18 | Taiwan Semiconductor Manufacturing Company | Re-deposition high compressive stress PECVD oxide film after IMD CMP process to solve more than 5 metal stack via process IMD crack issue |
FR2824954A1 (en) * | 2001-05-18 | 2002-11-22 | St Microelectronics Sa | Connection pad for an integrated circuit, comprises a reinforcement structure connected by feedthroughs to upper metallization |
TWI249842B (en) * | 2003-07-22 | 2006-02-21 | Ali Corp | Integrated circuit structure and design method |
JP2006024698A (en) * | 2004-07-07 | 2006-01-26 | Toshiba Corp | Semiconductor apparatus and manufacturing method thereof |
US7115985B2 (en) * | 2004-09-30 | 2006-10-03 | Agere Systems, Inc. | Reinforced bond pad for a semiconductor device |
US7274108B2 (en) * | 2004-11-15 | 2007-09-25 | United Microelectronics Corp. | Semiconductor chip capable of implementing wire bonding over active circuits |
JP2007005536A (en) * | 2005-06-23 | 2007-01-11 | Renesas Technology Corp | Semiconductor device |
-
2006
- 2006-09-29 DE DE102006046182A patent/DE102006046182B4/en not_active Expired - Fee Related
-
2007
- 2007-09-27 US US11/862,211 patent/US8592987B2/en active Active
-
2013
- 2013-11-25 US US14/088,455 patent/US20140145349A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020043727A1 (en) * | 2000-10-13 | 2002-04-18 | Hsiao-Che Wu | Bonding pad structure |
US6908841B2 (en) * | 2002-09-20 | 2005-06-21 | Infineon Technologies Ag | Support structures for wirebond regions of contact pads over low modulus materials |
DE10342996A1 (en) * | 2003-09-17 | 2005-04-21 | Infineon Technologies Ag | Semiconductor arrangement comprises a substrate with integrated electronic switching elements, layer stacks arranged over the substrate, and a dummy structure arranged in two layer stacks for mechanically stabilizing the stacks |
Also Published As
Publication number | Publication date |
---|---|
US20140145349A1 (en) | 2014-05-29 |
US8592987B2 (en) | 2013-11-26 |
US20080079168A1 (en) | 2008-04-03 |
DE102006046182A1 (en) | 2008-04-03 |
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